<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download" />
          <a :href="'/static/1.xlsx'">点击下载模版</a>
        </el-tag>
      </el-form-item>
      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API + '/eduservice/subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel"
        >
          <el-button slot="trigger" size="small" type="primary"
          >选取文件</el-button
          >
          <el-button
            :loading="loading"
            style="margin-left: 10px"
            size="small"
            type="success"
            @click="submitUpload"
          >上传到服务器</el-button
          >
        </el-upload>
      </el-form-item>
    </el-form>
  </div>

</template>

<script>
  export default {
    data(){
      return{
        BASE_API: process.env.BASE_API, // 接口API地址
        importBtnDisabled: false, // 按钮是否禁用,
        loading: false,
      }
    },
    created() {

    },
    methods:{
      //点击按钮上传文件到接口
      submitUpload(){
        this.importBtnDisabled = true;
        this.loading = true;
        // js.document.getElementById("upload").submit();
        this.$refs.upload.submit();
      },
      //上传成功
      fileUploadSuccess(resp){
        if (resp.success === true) {
          this.loading = false;
          this.$message({
            type: "success",
            message: resp.message,
          });
          this.$router.push({path:"/subject/list"})
        }
      },
      //上传失败
      fileUploadError(){
        this.loading = false;
        this.$message({
          type: "error",
          message: "导入失败",
        });
      }
    }
  }
</script>

<style scoped>

</style>
